| 摘要 |
A liquid sensing device is for a liquid consuming system in which air is introduced from the upstream end in association with consumption of liquid at the downstream end. The liquid sensing device includes a sensor positioning member that defines a sensing flow channel including an inlet hole at the upstream end and a first outlet hole at the downstream end, a sensor positioned on the outside face of the sensor positioning member at a location facing the sensing flow channel as to sense whether liquid is present in the sensing flow channel, and a sensor positioning member mounting portion that mounts the sensor positioning member. The sensor positioning member mounting portion includes a downstream buffer chamber-defining portion including an aperture communicating with the first outlet hole and that in conjunction with the sensor positioning member defines a downstream buffer chamber adapted to receive the liquid and the air exiting from the first outlet hole, and a second outlet hole communicating with the downstream buffer chamber and through which the liquid and the air from the downstream buffer chamber exit. Contours of the downstream buffer chamber are defined such that the liquid and the air received from the first outlet hole flow to the second outlet hole in nonlinear fashion along a wall face of the downstream buffer chamber. |
